More than 60 people have died in a suicide car bombing in the capital of Afghanistan, making it the deadliest insurgent attack in the country so far this year.
More than 150 others are injured.
Afghan officials say the the attacker used an ambulance to get through one security checkpoint by telling police he was taking a patient to a nearby hospital. He detonated his explosives at a second check point.
The Taliban is claiming responsibility. See all stories on this topic